Flash-boiler.



PATENTED APR. 18, 1995. H. M. BURNELL & M. E. MOGG.

FLASH BOILER. APPLICATION FILED 0OT.13, 1904.

PATBNTED APR. 18, 1905.

H. MTEfIRNELL & M. E. MOGG.

FLASE BOILER.

KPPLIOATIOH FILLED OUT. I3, 1904.

" SHEETSSHEET 2.-

dial [621d E- by the line a a of ity of neadil 40 Cook and State of Illinois, have invented certomobile-vehicles and also adapted for other taken apart and -erated thereby. I

unit is in more directcommunieation with'the UNITE .ug ented April 18, 1905.

Snares- Arsis'r rrrcag FLASH-QUEER.

srncxncamon forming m of Letters Patent in. 787,495, dated A ril 18, 1905. Application flied Ootobr 18,1904. Serial No. 228,356.

source of feed-water supply, while the upper-y 5 most coil of each unit nection with the engine or that .instrumen tality to which the steam is to be supplied. These units are so joinedin succession that the top coil of each unit is the bottom coil of the next subjacent unit; Each lower coil 3 begins witha riser-ofi'setfi, which in the uppermost unit is connected by a coupling 5 to the feed-Water pipe 6, through which water is pump, which is not here shown, as it forms no part of our present improvements. Each uppeii coil 2 terminates 'in a risen-offset 7, 'which isconnected by'a coupling. 8 to'the .riser-oifset 4 of the lower coil of the next Subjacent unit, so that the water in descending through the boiler flows through the lowex'j coil of the upper unit, then through the upper coil of the upper unit, then through the riserofiset and the coupling which connectsthe 7 said upper coil to the lower coil of the, next subjacent unit, and so on. The said riser offsets and couplings form traps 9,"which traps are disposed on the outer side of the To all whom it may concern.- I I Be it known that we, HARRY M. BURNELL Mose, citizens of the United MILLARD E. States, residing at Chicago, in the county of tain new and useful-Improvements in Flash- Boilers; and we do declare the following to be a full, clear, and exact description of the in'. vention, such as will enable others skilled in the art to which it appertain's to make and use the same. Qur-invention relates to improvements in flash-boilers especiallyadaptedfor use on anuses; and it consists in the construction, com bination, and arrangement of devices hereinafter described and claimed.

he object of our invention is to provide an efficient, cheap, simple, and compact flashboiler which is not affected by changes in its position or by the motion of the vehicle which carries it and which is provided with improved means to prevent-the passage of water by gravitytherethrough to enable the respective units thereof to be readily assembled and to superheat the steam gen- I same and are progressively higher as theiinits approach the bottom of the mass, the upper portions or heads of the traps being all disposed in the same horizontal plane. These traps prevent the water from circulating by gravity through the coils of the boiler and render it necessary for the pump to be at workin order to force water from the coils of one unit to the coils of the next unit below. Thisconstruction and arrangement of the coils 5 of our boiler renders the same especially useful as a-locomobile-boiler, as it remains unafiec'ted by changes in the position and the motion of the vehicle; Spacers 1-1 are disposed between the In the accompanying d'" wings',,Figure 1 is a side elevationof a flash-boiler embodying our improvements. Fig. 2 is a top plan View of the same. Fig. 8 is a-horizontal sectional view of the same, taken on the plane indicated Fig. 1; and Fig. :4 is a vertlcal sectional viewpf the same,- taken on the plane'indicated by the line 6 b of Fig. 2.

.urimproved boiler is composed of a pluralsuperimposed units 1, which are prefseparately formed, so that they may be y-separated to enable any of them to be replaced or repaired, as may be required.

The respective coils of the units of the boiler are dissimilar in form, and each unit compries an upper coil and a-lower coil. Each upper coil 2 is angular in form, and each lower coil 3 isspiral in form. The members or leads of each coil lie in planes that intersect those of the members or leads of the next adjacent coil vertically. The lowermost coil of eacherably coils thereof and between the broader spiral coils of adjacent units. The lower coil of the bottom unit is connected to a steam-pipe 12, which extends through and across the boiler at or near the bottomthereof and directly 95 across'the flame from the burner 13. A thermostatic regulator 14. for theburner is connected to this steam-pipe. The burner and the is; in more direct'c'on-j in connection with 55' forced by a suitable 0' mass of coils and are arranged around 'fthe said units on the outer sides of the narrower 9 thermostatic regulator are not more fully shown and described in this specification, as they constitute no part of our present i mprovements.

On the upper side of the boiler is a spider 15, comprising a central portion 16 and radial arms 17. U-shaped stay-rods 18, one for each arm of the spider, are employed in connection with the spider to detachahly secure the units and groups of the boiler together. The intermediate lower portions 19 of the stay-rods are disposed radially under the bottom coil ol the boiler, their inner arms 20 being extended up through the central spaces in the boiler formed by the centers of the coils, and the outer arms 21 of the stay-rods are disposed on the outer side of the mass of hoiler-coils. The upper ends of the vertical arms of the stayrods are screwthreaded, passed through open ings in the spider, and provided with clamping-nuts 22, which are screwed thereon and coact with the spider and the said stay-rods to iirmly clamp the units and groups of the boiler-coils together.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without re niring a more extended explanation.

Various changes in the form. proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the :ulvantages oi this invention. 4

comes l'i'aving thus descrihed our invention, what we claim as new, and desire to secure by Letters Patent,

'1. A flash-boiler com 'iosed oi a plurality oi superimposed coils, a spider on the upper side thereof, and U-shaped stay-rods counting with the spider to secure the coiis together, substantiall Y as described.

A flash-boiler composed of a plurality oi superimposml coils, a spider on the upper side thereof, and U-shaped stay rods, having: their lower, intormm'liate portions radially disposed under the bottom coil, their inner arms estendinp; up through spaces in the router ol' the mass oi eoiis and their outer arms disposed on the outer side oi the mass of coils, the said arms of the said sia wrods being secured to the" spider, substantially as described.

A liash-boiler comprising su nn'iinposmi units each having: an upper coil and a lower coil, the width of one coil being less than that of the other, means to clamp the said units together, and spacers between said units disposed on the outer side of the narrower coils tiltl'thf and clan'iped between thebroadercoils tlna'eol', substantially as described.

in testimony whereof we have hereunto set our hands in presence of twosubsoribing witnesses.

HARRY Fri. liillih l lldi. l h'IlIJiJ/ii i\ \Vitnesses:

\Vii. A. l llii{,l.\\'Aldi, lvl. F. Mono. 

